Hi everyone. Well, it was my best friend's birthday and his girlfriend was going to buy him a monster fish. Guess what she got him for his 180 gallon tank, a sturgeon. She didn't know what it was but she thought it was really cool looking and her husband would love it. Anyways, I'm trying to help him out but I've never had any experience with sturgeon. Here are some pictures of him. He's about 5 inches long. What kind is he and what should he feed the sturgeon?